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Comparison of fluctuating potentials and donor-acceptor pair transitions in a Cu-poor Cu2ZnSnS4 based solar cell

2014Journal article Open access
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dc.contributor.authorTeixeira, J. P.
dc.contributor.authorSousa, R. A.
dc.contributor.authorSousa, M. G.
dc.contributor.authorCunha, A. F. da
dc.contributor.authorFernandes, P. A.
dc.contributor.authorSalomé, P. M. P.
dc.contributor.authorGonzález, J. C.
dc.contributor.authorLeitão, J. P.
dc.date.accessioned2019-03-12T10:21:31Z
dc.date.available2019-03-12T10:21:31Z
dc.date.issued2014
dc.description.abstractThe structure of the electronic energy levels of a single phase Cu2ZnSnS4 film, as confirmed by Raman Scattering and x-ray diffraction, is investigated through a dependence on the excitation power of the photoluminescence (PL). The behavior of the observed asymmetric band, with a peak energy at ∼1.22 eV, is compared with two theoretical models: (i) fluctuating potentials and (ii) donor-acceptor pair transitions. It is shown that the radiative recombination channels in the Cu-poor film are strongly influenced by tail states in the bandgap as a consequence of a heavy doping and compensation levels. The contribution of the PL for the evaluation of secondary phases is also highlighted.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1063/1.4899057pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/12950
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAIP Publishingpt_PT
dc.relation.publisherversionhttps://aip.scitation.org/doi/10.1063/1.4899057pt_PT
dc.titleComparison of fluctuating potentials and donor-acceptor pair transitions in a Cu-poor Cu2ZnSnS4 based solar cellpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleApplied Physics Letterspt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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